CN216618566U

CN216618566U - Stop valve capable of adjusting flow speed

Info

Publication number: CN216618566U
Application number: CN202123374390.3U
Authority: CN
Inventors: 应杰
Original assignee: Jiangsu Wohuide Intelligent Fluid Technology Co ltd
Current assignee: Beijing Xinhangcheng Energy Development Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-27
Anticipated expiration: 2031-12-29

Abstract

The utility model relates to a stop valve capable of adjusting flow rate, which comprises a valve body, a valve cover and a valve rod, wherein a liquid inlet and a liquid outlet are arranged on two sides of the valve body, the valve cover is arranged above the valve body and is connected with the valve body through a bolt, one end of the valve rod is arranged in the valve body, the other end of the valve rod penetrates through the valve cover, a filtering device is arranged in the valve body, a sealing device and an elevation device are arranged on the valve cover, the filtering device comprises a first filtering net and a second filtering net, a valve seat is arranged in the valve body, the first filtering net is arranged below the valve seat and is communicated with the liquid inlet, the second filtering net is arranged above the valve seat and is communicated with the liquid outlet, through the arrangement of the filtering device, liquid entering from the liquid inlet can be primarily filtered through the first filtering net, residues and the like are prevented from being clamped between the valve rod and the valve seat, so that the valve rod and the valve seat can not be closed, by providing a second filter screen, the liquid can be filtered again.

Description

Stop valve capable of adjusting flow speed

Technical Field

The utility model relates to the technical field of stop valves, in particular to a stop valve capable of adjusting flow speed.

Background

The stop valve is an extremely important cut-off valve, the sealing of the stop valve is realized by applying torque to a valve rod, and the valve rod applies pressure to a valve clack in the axial direction, so that a sealing surface of the valve clack is tightly attached to a sealing surface of a valve seat, and the leakage of a medium along a gap between the sealing surfaces is prevented.

Patent No. CN201320842670.9 discloses a stop valve, which has poor sealing performance when in use, and is easy to cause liquid leakage between the valve rod and the valve cover and between the valve cover and the valve body; in addition, the flow rate of the shut-off valve is proportional to the gap between the valve stem and the valve seat, i.e., the moving distance of the valve stem, which is not easy to observe; meanwhile, impurities possibly exist in the pipeline, the impurities are easy to remain between the valve rod and the valve seat, and when the valve rod and the valve seat are closed, the valve rod and the valve seat are not closed tightly.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the problems in the prior art, the utility model provides a stop valve capable of adjusting the flow rate, so as to solve the technical problems mentioned in the background technology.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: a stop valve capable of adjusting flow rate comprises a valve body, a valve cover and a valve rod, wherein a liquid inlet and a liquid outlet are arranged on two sides of the valve body, the valve cover is arranged above the valve body and is connected with the valve body through a bolt, one end of the valve rod is arranged in the valve body, the other end of the valve rod penetrates through the valve cover, a filtering device is arranged in the valve body, a sealing device and an elevation device are arranged on the valve cover, the filtering device comprises a first filtering net and a second filtering net, a valve seat is arranged in the valve body, the first filtering net is arranged below the valve seat and is communicated with the liquid inlet, the second filtering net is arranged above the valve seat and is communicated with the liquid outlet, the sealing device comprises a filling seat, filling materials and a pressing plate, the filling seat is arranged above the valve cover, the filling materials are arranged between the valve rod and the filling seat, the pressing plate is arranged above the filling materials, and is connected with the packing seat through a bolt.

Preferably, the elevation device includes adapter sleeve, scale rod and fixing base, the fixing base sets up the top of clamp plate, and with packing seat fixed connection, valve rod and fixing base threaded connection, the adapter sleeve is rotatable and can not establish outside the valve rod by slidable cover, the one end and the adapter sleeve fixed connection of scale rod, the other end and fixing base slidable ground are connected. This design can be convenient for observe the valve rod rebound's distance, and then adjusts the velocity of flow of stop valve.

In a further preferred mode, a first support is fixedly arranged on the inner wall of the first filter screen, and a second support is fixedly arranged on the inner wall of the second filter screen. This design can improve the intensity of first filter screen and second filter screen, prevents that it warp under the hydraulic pressure effect.

In a further preferred embodiment, the top of the valve stem is provided with a rotary handle, and the connecting sleeve and the bottom of the rotary handle are rotatably connected. This design can be convenient for rotate the valve rod, and be convenient for between connecting seat and the valve rod nonslidable and rotationally connect.

In a further preferred aspect, a pressing bushing is disposed above the filling material, the pressing bushing is slidably connected to the filling material seat, and an upper surface of the pressing bushing is attached to the pressing plate. The design can compact the filling material and improve the sealing performance between the valve rod and the filling material seat.

In a further preferred mode, the valve body is provided with a first conical surface, and the valve cover is provided with a second conical surface matched with the first conical surface. The design can improve the sealing performance between the valve body and the valve cover.

In a further preferred embodiment, the liquid inlet and the liquid outlet are provided with connecting flanges. This design can be convenient for this stop valve and external pipe connection.

(III) advantageous effects

Compared with the prior art, the utility model provides the stop valve capable of adjusting the flow speed, which has the following beneficial effects:

1. according to the utility model, by arranging the filtering device, the liquid entering from the liquid inlet can be primarily filtered through the first filter screen, so that residues and the like are prevented from being clamped between the valve rod and the valve seat, the valve rod and the valve seat can not be closed, and the liquid can be filtered again by arranging the second filter screen;

2. according to the utility model, the sealing device is arranged, so that the sealing property between the valve rod and the valve cover can be improved, liquid seepage is prevented, and the sealing property between the valve cover and the valve body can be improved by arranging the first conical surface and the second conical surface;

3. according to the utility model, by arranging the elevation device, the flow speed of the stop valve is in direct proportion to the upward moving distance of the valve rod, and by arranging the scale rod, the upward moving distance of the valve rod can be conveniently observed, so that the flow speed of the stop valve can be adjusted.

Drawings

FIG. 1 is a schematic view of the overall structure of a stop valve with adjustable flow rate according to the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a schematic view showing a state where the bonnet and the valve body are not coupled in the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve stem; 4. a liquid inlet; 5. a liquid outlet; 6. a first filter screen; 7. a second filter screen; 8. a valve seat; 9. a filler seat; 10. a filler; 11. pressing a plate; 12. connecting sleeves; 13. a graduated rod; 14. a fixed seat; 15. a first bracket; 16. a second bracket; 17. rotating the handle; 18. pressing a material bushing; 19. a first conical surface; 20. a second tapered surface; 21. and connecting the flanges.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-3, a stop valve capable of adjusting flow rate comprises a valve body 1, a valve cover 2 and a valve rod 3, wherein a liquid inlet 4 and a liquid outlet 5 are arranged on two sides of the valve body 1, the valve cover 2 is arranged above the valve body 1 and connected with the valve body 1 through a bolt, one end of the valve rod 3 is arranged in the valve body 1, the other end of the valve rod penetrates through the valve cover 2, a filtering device is arranged in the valve body 1, a sealing device and an elevation device are arranged on the valve cover 2, the filtering device comprises a first filtering net 6 and a second filtering net 7, a valve seat 8 is arranged in the valve body 1, the first filtering net 6 is arranged below the valve seat 8 and communicated with the liquid inlet 4, the second filtering net 7 is arranged above the valve seat 8 and communicated with the liquid outlet 5, the sealing device comprises a filler seat 9, a filler 10 and a pressing plate 11, the filler seat 9 is arranged above the valve cover 2, the filler 10 is arranged between the valve rod 3 and the filler seat 9, the pressing plate 11 is arranged above the filling material 10 and is connected with the filling material seat 9 through bolts. A first support 15 is fixedly arranged on the inner wall of the first filter screen 6, and a second support 16 is fixedly arranged on the inner wall of the second filter screen 7. The valve body 1 is provided with a first conical surface 19, and the valve cover 2 is provided with a second conical surface 20 matched with the first conical surface.

In this embodiment, the elevation device includes a connection sleeve 12, a scale rod 13 and a fixing seat 14, the fixing seat 14 is disposed above the pressing plate 11 and is fixedly connected to the packing seat 9, the valve rod 3 is in threaded connection with the fixing seat 14, the connection sleeve 12 is rotatably and non-slidably sleeved outside the valve rod 3, one end of the scale rod 13 is fixedly connected to the connection sleeve 12, and the other end of the scale rod is slidably connected to the fixing seat 14. The top of the valve rod 3 is provided with a rotary handle 17, and the connecting sleeve 12 is rotatably connected with the bottom of the rotary handle 17. When using, rotate rotatory handle 17, make it drive valve rod 3 and rotate, and then through

valve rod

3 and 14 threaded connection of fixing base, drive valve rod 3 spiral shell screwing in, at the in-process of valve rod 3 rebound, adapter sleeve 12 drives scale rod 13 rebound, and the upper surface through fixing base 14 corresponds the different numerical values on scale rod 13, is convenient for observe the distance of valve rod 3 rebound.

In this embodiment, a pressing bush 18 is disposed above the filling material 10, the pressing bush 18 is slidably connected with the filling material seat 9, and the upper surface of the pressing bush 18 is attached to the pressing plate 11. When the packing device is used, the packing material 10 is placed in the packing seat 9 and located on the outer side of the valve rod 3, the pressing bush 18 is placed in the packing seat 9, the pressing plate 11 is pressed on the pressing bush 18, and the pressing plate 11 is connected with the packing seat 9 through bolts.

In this embodiment, the liquid inlet 4 and the liquid outlet 5 are both provided with a connecting flange 21. In use, the liquid inlet 4 and the liquid outlet 5 are connected to an external pipeline through the connecting flange 21.

Example 2:

to sum up, when using, place first filter screen 6 in the below of disk seat 8, place second filter screen 7 in the top of disk seat 8, through first support 15 and second support 16, improve the intensity of first filter screen 6 and second filter screen 7, prevent that it from taking place to warp, liquid passes through inlet 4 and gets into, carry out the primary filtration through first filter screen 6, liquid after the filtration passes through in valve rod 3 and the clearance entering second filter screen 7 between the disk seat 8, carry out the secondary filtration back through second filter screen 7, discharge through liquid outlet 5.

Example 3:

in conclusion, when the packing material 10 is used, the sealing performance between the valve rod 3 and the valve cover 2 is improved through the packing material 10, when the packing material 10 is installed, the packing material 10 is firstly placed in the packing seat 9 and positioned on the outer side of the valve rod 3, the material pressing bushing 18 is placed in the packing seat 9, the pressing plate 11 is pressed on the material pressing bushing 18, the pressing plate 11 is connected with the packing seat 9 through the bolts, and the packing material 10 is compacted through the material pressing bushing 18 and the pressing plate 11; when the velocity of flow in this stop valve is adjusted to needs, rotates rotatory handle 17, makes it drive valve rod 3 and rotates, and then through

valve rod

3 and 14 threaded connection of fixing base, drives valve rod 3 spiral shell screwing in, and at the in-process of valve rod 3 rebound, adapter sleeve 12 drives scale rod 13 rebound, and the upper surface through fixing base 14 corresponds different numerical values on scale rod 13, is convenient for observe the distance of valve rod 3 rebound.

While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and variations may be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a stop valve of adjustable velocity of flow, includes valve body (1), valve gap (2) and valve rod (3), the both sides of valve body (1) are equipped with inlet (4) and liquid outlet (5), valve gap (2) set up the top of valve body (1), and pass through bolted connection with valve body (1), the one end setting of valve rod (3) is in valve body (1), and the other end runs through valve gap (2), its characterized in that: a filtering device is arranged in the valve body (1), a sealing device and an elevation device are arranged on the valve cover (2), the filtering device comprises a first filtering net (6) and a second filtering net (7), a valve seat (8) is arranged in the valve body (1), the first filtering net (6) is arranged below the valve seat (8), and is communicated with the liquid inlet (4), the second filter screen (7) is arranged above the valve seat (8), and is communicated with the liquid outlet (5), the sealing device comprises a filling seat (9), filling material (10) and a pressing plate (11), the filling seat (9) is arranged above the valve cover (2), the filling material (10) is arranged between the valve rod (3) and the filling seat (9), the pressing plate (11) is arranged above the filling material (10) and is connected with the filling material seat (9) through bolts.

2. A flow rate adjustable shut-off valve as claimed in claim 1, wherein: the elevation device includes adapter sleeve (12), scale rod (13) and fixing base (14), fixing base (14) set up the top of clamp plate (11), and with filler seat (9) fixed connection, valve rod (3) and fixing base (14) threaded connection, adapter sleeve (12) rotatable and can not slidable ground cover establish outside valve rod (3), the one end and adapter sleeve (12) fixed connection of scale rod (13), the other end and fixing base (14) slidable ground connect.

3. An adjustable flow rate shut off valve as defined in claim 1, wherein: the inner wall of the first filter screen (6) is fixedly provided with a first support (15), and the inner wall of the second filter screen (7) is fixedly provided with a second support (16).

4. An adjustable flow rate shut off valve as defined in claim 2, wherein: the top of valve rod (3) is equipped with rotatory handle (17), adapter sleeve (12) and the bottom of rotatory handle (17) are rotationally connected.

5. An adjustable flow rate shut off valve as defined in claim 1, wherein: a pressing lining (18) is arranged above the filling material (10), the pressing lining (18) is connected with the filling material seat (9) in a sliding mode, and the upper surface of the pressing lining is attached to the pressing plate (11).

6. An adjustable flow rate shut off valve as defined in claim 1, wherein: the valve is characterized in that a first conical surface (19) is arranged on the valve body (1), and a second conical surface (20) matched with the valve cover (2) is arranged on the valve cover.

7. An adjustable flow rate shut off valve as defined in claim 1, wherein: and the liquid inlet (4) and the liquid outlet (5) are both provided with connecting flanges (21).